Apparatus for impregnating porous material.



W..J. FRAME & H. L. GALLOWAY. APPARATUS FOR. IMPBEGNATING POROUS MATERIAL. APPLICATION FILED SEPT.1 6, 1913.

1,104,488, Patented July 21, 1914.

4 8HEETSSHEET 1.

THE NOR/PIS PETERS c0 PHOTO LITHQ. WASHINCI'UN. D. C

w. J. PRAME'& H. L. GALLOWAY. APPARATUS FOR IMPREGNATING POROUS MATERIAL.

APPLICATION FILED SEPT. 16, 1913.

Patented July 21, 1914.

4 SHEETS-$11331 2.

IHE NORRIS PETERS CO., PHUTU-LITHQ' WASHINGTON. D. C-

W. J. FRAME & H. L. GALLOWAY.

APPARATUS FOR IMPREGNATING POROUS MATERIAL.

APPLICATION FILED SEPT. 16, 1913.

1,104,488, Patented July 21, 1914.

4 SHEETS-SHEET 3.

Wii'vzesses: lvwey m THE NORRIS PETERS C01. PHOTO-LITHO., WASHINGTON. D. C.

APPLICATION FILED SEPT. 16, 1913.

Patented July 21, 1914.

4 SHEETS-SHEET 4.

Eziorrzgys.

THE AORRIS PETERS CO.. PHOTO-LITHOY, WASHINGTON. D. C.

nnrrn' s'rarns PATENT OFFICE.

WILLIAM JOHNSTON FRAME, OF GARIVIUNNOCK, AND HOPE LYLE. GALLOWAY, OF KILIVIACOLM, SCOTLAND, ASSIGNORS TO SAVEOIL CREOSOTING MACHINE COMPANY,

LIMITED, 015 GLASGOW, SCOTLAND.

morass.

Specification of Letters Patent.

Patented July 21, 1914.

Application filed September 16, 1913. Serial No. 790,134.

To all whom it may concern:

Be it known that we, WILLIAM JoHNsToN FRAME and Horn LYLE GALLowAY, both subjects of the King of Great Britain and Ireland, and residents, respectively, of Holm Glen, Carmunnock, Lanarkshire, Scotland, and Southcroft, Kilmacolm, Itenfrewshire, Scotland, have invented certain new and useful Improvements in Apparatus for Imprcgnating Porous Material; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, ref erence being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

Our invention relates to apparatus adapted for use in impregnating wood and other porous material, and especially suitable for the impregnating with creosote or other preserving liquid of timber logs intended for use as railway ties.

Our invention consists in a novel construct-ion and combination of elements, which will be described in the following specification and more articularly set forth in the annexed claims.

Referring to the accompanying drawings:-Figures 1, 2, 3, 4, and 5 illustrate a rotary machine according to our invention, which is designed specially for use in impregnating railway ties with creosote or the like. Fig. 1 is a front elevation of the machine, the right hand half being an outside .view, and the left hand half a section on the line of AA of Fig. 2. Fig. 2 is a plan of the machine. Fig. 3 is an end elevation looking from right to left in Fig. 1. Fig. 4 is a section on the line D1) of Fig. 3, 2'. e., a section through the charging gate, and shows the device for preventing air leakage. Fig. 5 shows the arrangement of cam and eccentric, whereby the containers are moved intermittently into their operative positions.

Figs. 6 and 7 illustrate details of an open tank machine, Fig. 6 being a partial longitudinal section of the machine on line BB, Fig. 7 and Fig. 7 being an end elevation of the construction illustrated in Fig. 6, looking from left to right.

9 is a closed casing or tank adapted to carry creosote or other impregnating liquid in its lower part, the upper part of the tank being maintained in a vacuous condition. A vacuum is maintained within the upper part of the tank by means of a vacuum pump (not shown), which is connected to the port 72,. p b 119 is a pulley adapted to be driven by a 40 is a shaft adapted to be clutched to the pulley 19, and caused to revolve with it by means of the clutch 18, operated by the handle 41.

w is a. reducing gear comprising a worm and worm wheel by which the shaft 42 is driven from the shaft 40 at a reduced speed. The shaft 42 carries a pinion 43 which meshes with a wheel 44 keyed on a shaft 45. This shaft carries two pinions 0 and g which mesh respectively with wheels 37 and r. The wheel r is mounted on the shaft 46 and is of the same diameter as the wheel 9. It therefore revolves at the same speed as the wheel 9. The wheel 79 is keyed on a sleeve 47 which envelops the shaft 46. The wheel 7) is three times the diameter of the pinion 0 and the sleeve 47 therefore revolves at one-third of the speed of the shaft 45.

On the shaft 46 is keyed an eccentric m, which engages with a bowl 48 carried by the double lever s. This bowl is also engaged by the cam a, which is keyed on the sleeve 47. The lever s is fulcrumed at one end 49, and the other end is pivotally connected to one end of each of the links 52, the other ends of which are pivotally connected to the lever 11, which is adapted to oscillate, being loosely mounted on the end of a shaft 0. Keyed on this shaft 0 is a ratchet wheel t which is adapted to be engaged by a pawl u carried by the lever Q). The eccentric m would give one to-and-fro movement to the lever s for, eachrevolution of the eccentric, were it not that the lever is held up by the cam n. The cam n rotates once for every three revolutions of the eccentric m. It follows that the lever s is oscillated only during every third revolution of the eccentric m.

The ratchet wheel t is provided with six teeth, and it therefore follows that, at every third revolution of the eccentric m, the shaft 0 is rotated through one-sixth of a revolution. Moreover, the eriods of movement of the shaft 0 are of short duration compared with the periods of rest between the move ments. The shaft 0 passes through a stuifing box 7 in one of the end walls d of the tank 9. The shaft is supported in bearings 53 and 54, and carries, inside the casing, two drums 6. One of these drums can be seen in Fig. 1. The other drum is similar and is located inside the other end of the casing. Extending between these two drums, and connected thereto, is a series of containers a, a. Six containers are provided in the machine illustrated. These containers are arranged in alinement with holes 6, e in the drums. The containers are so arranged with relation to the driving gear hereinbefore described that the containers come to rest in the positions indicated by the numerals 1, 2, 3, 4, 5, and 6. In the position 1 the containers are adapted to be charged with ties and discharged of the same.

56, 56 are annular members which are let into the end plates d of the tank. These members carry floating rings 8 which are pressed by springs 9 against the drum face, so as to make an air-tight connection with the drum. (See Fig. 4.) The outer end of each annular member 56 is closed bya gate 75 adapted to be actuated by hydraulic rams 57 and 58, which work in cylinders 59 and 60 respectively, the ram 57 being adapted to close the gate, and the ram 58 to open it. The ram 57 is directly connected to the gate a as shown in Figs. 1, 3 and 4, while the ram 58 is connected to the gate by two side rods 61.

The gate i normally closes the outer end of the annular member 56 and thus prevents the flow of air into the tank. When any container is at rest in the position 1 it is opposite the members 56. After the container comes to restv in this position, the gates 2 are lifted by the action of the hydraulic ram 58, and the interior of the container is thus open to the atmosphere, but leakage of air into the tank is prevented by the rings 8 which are firmly held against the faces of the drum 6. In this position of the apparatus, railway ties or the like are inserted into and withdrawn from the containers by way of the annular members 56. While the fresh. ties are being charged into the container at one end, the treated ties are being discharged at the other end.

The creosote or other impregnating liquid 1s carried in the tank to about the level of the aXis of the shaft 0 so that, when each container reaches the position 2, it is completely submerged in the liquid, and, as the ends of the container are open, the liquid has gained access to the ties. WVhen each container is in the position 3, it is subjected to the pressure of the impregnating liquid, and for this purpose the apparatus shown in the bottom left hand portion of Fig. 1 is provided. This apparatus can also be partly seen in Figs. 3 and 7 but is best seen at the bottom of Fig. 6, which latter figure illustrates a different apparatus, with, however, the same pressure device.

A. small cylinder is formed on each end plate d, and within this cylinder is provided a piston 7' adapted to move therein. The inner end of the cylinder is open to the tank, but the outer end is closed by the cap 66.

A pipe 69 leads from the valve 10 to pipes 72, 72 from which the pipes k, 70 lead to the cylinders 65. By means of this valve 10, creosote under pressure can be supplied to the cylinders 65, the pressure acting to force the pistons 7' against the faces of the drums b. The creosote under pressure also passes through a iduct 17 in each piston j, and obtains access to the interior of the container a, thus placing the contents of the container under pressure. The pistons y are held against the faces of the drums and prevent undue leakage of creosote into the tank.

While the containers are at rest in the position 3, the pressure is, by means of the valve 10, put on and taken off. Except in the positions 1 and 3 the containers are open at both ends to the tank, and the ties are therefore under vacuum.

The shaft 16 carries a cam 11, which acts on a bowl 67 carried by a forked rod 68, which is adapted to operate the valve 10. This valve may be of any convenient type adapted either to place the pipe 69 in communication with a pipe 14; which leads from the pump 70, or to place the pipe 69 in communication with the exhaust pipe 71. This exhaust pipe 71 is led into a pipe 12 which leads from the interior of the tank, to the suction of the pump 70.

The. pipes 3 lead from the pipes 72 to the cylinders 60. Therefore, by means of the valve 10 the cylinders 65 and the cylinders 60 can be put under or relieved from pressure. The cylinders 59 are under con stant pressure by being connected by the pipes 4 and 13 to a. hydraulic accumulator not shown. When the pressure on the ram 58 exceeds the pressure on the ram 57, the gate 2' is raised, but when the pressure on the ram 58 is less than that on the ram 57, the gate is lowered.

15 is a liquid level control which may be of the float type, and which is employed to control the level of the liquid within the tank. 1

16 are grids which are provided to prevent the ends of the ties projecting beyond the ends of the containers. The number of containers shown in the apparatus just described is six, but any convenientnumber can be employed. Instead of arranging for the containers to rotate and to pass into the several positions within the tank, or vessel, under vacuum, the containers could be arranged to rotate, wholly or partly, within a tank open to the atmosphere.

Figs. 6 and 7 illustrate details of an open tank machine. Fig. 6 is a partial longitudinal section of the machine on the line B, B of Fig. 7. Fig. 7 is an end elevation of Fig. 6 looking from left to right.

I 22 is a member which is adapted to have a limited movement parallel to the axis of rotation of the containers. Similar memhere are provided one at each end of the tank. The members are of a segmental shape as shown at Fig. 7 and cover the ends of the containers when in positions 5 and 6.

The members 22 are pressed toward each other by springs 23, which bear against the inside ends of the recesses 76, and against washers 77 carried by bolts 78, 79. The bolts 78 extend from end to end of the machine, while the bolts 79 are firmly held at 80 in the arc-shaped portions 81 of the end plates 82 of the tank.

Within holes in the member 22 are provided pistons 27 which are opposite the ends of the containers when these latter are in the positions 5 and 6. A port 31 in each piston '27 connects with a port 32 in the member 22, and this port 32 leads to a passage 33 which is connected to a vacuum pump not shown. air from the passage 33, and this passage communicates with the ports 31 in both pistons 27. A passage 33 may be provided at both ends of the machine, or at one end only, but in either case the member 22 with pistons 27 is provided at both ends of the machine.

Each member 22 is provided with a covered plate 30 for each piston 27 the covered plate being bolted to the member 22 and free from the piston 27 Each covered plate is perforated at 29 so as to allow atmospheric air to act on the back of the piston 27 and force it against the face of the drum Z7. Each piston 27 is provided with packing rings 28.

Creosote under pressure is supplied to the port 24: from a pump such as that shown at in Fig. 2, which communicates with the passage 25, which extends completely around the member 22. Small holes 26 extend from the annular chamber 25 to that face of the member which bears against the drum Z). This device prevents air being sucked from the atmosphere into the containers 0;.

What we claim as new and desire to secure by Letters Patent is 1. An apparatus adapted for use in impregnating porous material, and comprising a plurality of containers, means for" The vacuum pump draws moving said containers bodily into a plurality of operative positions, the said cont-ainers being adapted to be charged with the material to be treated, when in one of the said operative positions, means for subjecting the said material to a pressure of impregnating fluid in said containers, when the latter are in a later operative position, and means for placing the said containers under vacuum when in a still later operative position.

2. An apparatus adapted for use in impregnating porous material and comprising a plurality of containers, arranged parallel to each other, and in a circle, means for rotating said containers about the axis of said circle into a plurality of operative positions, the said containers being adapted to be charged with the material to be treated, when in one of the said operative positions, and means for subjecting the said material to a pressure of impregnating fluid in said containers, when the latter are in another of said operative positions.

3. An apparatus adapted for use in impregnating porous material and comprising a plurality of containers arranged parallel to each other, and in a circle, means for rotating said containers about the axis of said circle into a plurality of operative positions, the said containers being adapted to be charged with the material to be treated when in one of the said operative positions, means for subjecting the said material to a pressure of impregnating fluid in said containers when the latter are in a later operative position, and means for placing the said containers under vacuum when in a still later operative position.

4. An apparatus adapted for use in impregnating porous material and comprising a plurality of containers, means for moving said containers bodily into a plurality of 0perative positions, and holding them stationary in said operative positions, the said containers being adapted to be charged with the material to be treated when in one of the said operative positions, means for subjecting the said material to a pressure of impregnating fluid in said containers when the latter are in a later operative position, and means for placing the said containers under vacuum when in a still later operative position.

5. An apparatus adapted for use in impregnating porous material and comprising a tank adapted to contain impregnating liquid, a plurality of containers arranged parallel to each other, and in a circle, means for rotating said containers about the axis of said circle into a plurality of operative positions, some above and some below the liquid level in said tank, the said containers being adapted to be charged with the material to be treated when in one of the said operativepositions above the liquid level in said tank, and means for subjecting the said material to pressure when the said containers are in another of said operative positions below-the liquid level in said tank.

6. An apparatus adapted for use in impregnating porous material and comprising a tank adapted to contain impregnating liquid, a plurality of containers arranged parallel to each other, and in a circle, means for rotating said containers about the axis of said circle into a plurality of operative positions, some above and some below the liquid level in said tank, the said containers being adapted to be charged with the material to be treated when in one of the said operative positions, above the liquid level' in said tank, means for subjecting the said material to a pressure of impregnating fluid in said containers when the latter are in a later operative position below the liquid level in said tank, and means for placing the said containers under vacuum when in a still later operative position above the liquid level in said tank.

7. An apparatus adapted for use in impregnating porous material and comprising, a tank adapted to contain impregnating liquid, means adapted to maintain a vacuum in said tank above the liquid level, a plurality of open-ended containers arranged parallel to each other and in a circle and within said tank, means for rotating said containers about the axis of said circle into a plurality of operative positions some above and some below the liquid level in said tank, the said containers being adapted.

to be charged with the material to be treated when in one of the said operative positions, and means for subjecting the said material to pressure when the said containers are in another of said operative positions below the liquid level in said tank.

- 8. An apparatus adapted for use in impregnating porous material and comprising a tank adapted to contain impregnating liquid, means adapted to maintain a vacuum in said tank above the liquid level, a plurality of open-ended containers arranged parallel to each other and in a circle and within said tank, means for rotating said containers about the axis of said circle into a plurality of operative positions some above and some below the liquid level in said tank, the said containers being adapted to be charged with and discharged of the material to be treated when in one and the same operative position, and means for subjecting the c said material to a pressure of impregnating fluid in said containers when the latter are in another of said operative positions, and means for subjecting the said material to pressure when the said containers are in another of said operative positions below the liquid level in said tank.

9. An apparatus adapted for use-in impregnating porous material and comprising a plurality of open-ended containers means for moving said containers bodily into a plurality of operative positions, and holding them stationary in said operativepositions, the said containers being adapted to be charged with the material to be treated when in one of the said operative positions, a cylinder, a pump adapted to supply impregnating liquid under pressure to said cylinder, a piston adapted to slide in said cylinder and to seal in turn the end of each of said containers when in another of said operative positions, the said piston being provided with a hole adapted to admit impregnating liquid from said cylinder to said container.

10. An apparatus adapted for use in impregnating porous material and comprising a tank adapted to contain impregnating liquid, a plurality of open-ended containers arranged parallel to each other and in a circle, means for rotating said containers about the axis of said circle into a plurality of operative positions, some above and some below the liquid level in said tank, the said containers being adapted to be charged with the material to be treated when in'one of the said operative positions above the liquid level in said tank, a cylinder, a pump adapted to supply impregnating liquid under pressure to said cylinder, a piston adapted to slide in said cylinder and to seal in turn the end of each of the said containers when in another of said operative positions below the liquid level in said tank, the said piston being provided with a hole adapted to admit impregnating liquidvfrom said cylinder to said container. 7 a

11. An apparatus adapted for use in im pregnating porous material and comprising a tank adapted to contain impregnating liquid, means adapted to maintain a vacuum in said tank above the liquid level, a plurality of open-ended containers arranged parallel to each other and in a circle, and within said tank, means for rotating said containers about the axis of said circle into a plurality of operative positions some above and some below the liquid level in said tank, the said containers being adapted to be charged with the material .to be treated when in one of the said operative positions, means for closing communication between the interior of said containers and the interior of said tank when charging said containers, and means for subjecting the said material to pressure when the said containers are in another of said operative positions below the liquid level in said tank.

12. An apparatus adapted for use in impregnating porous material and comprising a tank adapted to contain impregnating liquid, means adapted to maintain a vacuum in said tank above the liquid level,aplurality of open-ended containers arranged parallel to each other and in a circle and within said tank, means for rotating said containers about the axis of said circle into a plurality of operative positions, some above and some below the liquid level in said tank, the said containers being adapted to be charged with the material to be treated when in one of the said operative positions, means for closing communication between the interior of said containers and the interior of said tank when charging and discharging said containers and means for subjecting the said material to pressure when the said contain ers are in another of said operative positions below the liquid level in said tank.

In testimony whereof we have signed our names to this specification in the presence of subscribing witnesses.

WILLIAM JOHNSTON FRAME.

Witnesses:

ROBERT MORRISON NEILSON, JAMES SIM.

HOPE LYLE GALLOWAY. Witnesses:

KATIE C. MURRAY, HERBERT J AMES WEIR, JAMES AULD.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

